🔬 Category

physics.atom-ph

630 papers

The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.

At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.

Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.

🔬 atomic physics

Low energy elastic scattering of hydrogen, deuterium and tritium on helium isotopes

Motivated by applications in neutrino mass experiments and precision spectroscopy, this paper presents calculations of energy-dependent elastic scattering cross sections for hydrogen, deuterium, and tritium on helium isotopes, revealing that tritium scattering is significantly enhanced at low energies due to a near-threshold s-wave resonant bound state before converging to a geometric limit at higher energies.

B. J. P. Jones, A. Negi, A. Semakin2026-04-29
⚛️ quantum physics

Randomised measurements of a disorder-induced entanglement transition in a neutral atom quantum processor

This paper demonstrates the measurement of entanglement entropy and the observation of a disorder-induced transition from chaotic to localized dynamics in a programmable neutral-atom quantum simulator (QuEra's Aquila) by employing a novel randomised measurement protocol that bypasses the need for local gate control through the combination of local energy tuning and a global field.

Apollonas S. Matsoukas-Roubeas, Oscar Scholin, Lucas Sá, Arinjoy De, Majd Hamdan, Alexei Bylinskii, Andrew J. Daley, Dor (…)2026-04-29
🔬 atomic physics

Overcoming limitations on gate fidelity in noisy static exchange-coupled surface qubits

This work employs simulations of open quantum systems and the theory of quantum optimal control, specifically the Krotov method, to overcome noise-induced limitations in statically coupled exchange surface qubits, and demonstrates that high-precision operations are achievable through optimized experimental designs that surpass conventional Rabi driving.

Hoang-Anh Le, Saba Taherpour, Denis Janković, Christoph Wolf2026-04-28
🔬 atomic physics

Disentangling the Effect of Ionic Coupling and Multiple Interfering Terms in Attosecond Molecular Interferometry

This paper demonstrates that near-infrared field-induced dynamics within a molecular cation create an additional quantum pathway that significantly alters the sideband signals in attosecond interferometry, highlighting the need to account for such ionic coupling when interpreting molecular spectroscopy.

Ioannis Makos, Jakub Benda, David Busto, Benjamin Steiner, Barbara Merzuk, Serguei Patchkovskii, Van-Hung Hoang, Uwe Thu (…)2026-04-28
🔬 atomic physics

Reducing thermal noises by quantum refrigerators

This study proposes using three-level or four-level quantum systems as refrigerators to cool microwave resonators and reduce thermal noise, demonstrating through analytical results that this method can achieve temperatures below liquid helium levels without traditional cryogenics, with four-level systems offering broader operational parameters by mitigating the limitations of strong laser driving.

Han-Jia Bi, Sheng-Wen Li2026-04-27
🔬 atomic physics

Wavelength dependence of laser pulse filamentation in the close spectral vicinity of atomic resonances

This study investigates how laser pulse filamentation in rubidium vapor near the atomic D2D_2 resonance varies with wavelength and demonstrates that pulses below the resonance induce strong self-focusing and sharp plasma boundaries, whereas pulses above the resonance result in weaker focusing and diffuse boundaries due to the interplay of anomalous dispersion, transitions to excited states, and multiphoton ionization rates.

Gabor Demeter2026-04-27